Forums > MaxMSP

MIDI noteofffs

Jun 18 2012 | 9:24 pm

Hi all!

I'm using this system to play notes on a virtual instrument.
I found it useful because this way I'm sure to avoid broken notes, especially when playing very fast.
The problem, as you may see is: how do I sent noteoffs to the correct gate?
Thanks for any tip!

-- Pasted Max Patch, click to expand. --


  1. midi.png


Jun 19 2012 | 12:18 am

Depends on what you want to do—only one note at a time for each MIDI output? You have to store the previous pitch and do the noteoff before the next noteon. Or you can use [poly] which has some nice noteon/noteoff tracking features, and its voice number can control the [gate], or can be used to assign a MIDI channel number directly.

-- Pasted Max Patch, click to expand. --

Jun 19 2012 | 2:45 am

you simply need 2 of those patches in parallel, one for note on and one for note off.

Jun 19 2012 | 12:31 pm

thanks everyone, I found seajames solution nr.1 very efficient, considering I have to set MIDI after [gate] … yet poly is something very interesting i never used, but i heard it is very CPU efficient, capable of using multicores…
thanks, again!

Jun 19 2012 | 3:01 pm


But a slight correction: [poly~] uses multiple cores, not [poly] — the naming of these two objects is definitely a source of confusion :)

[poly] is very lightweight CPU-wise by comparison. Maybe it should be called [midipoly] or [notepoly] instead, that’s more descriptive of what it’s typically used for.

Now, if you were generating your own synthesized sounds or triggering samples with the MIDI information, you could make great use of a [poly~] abstraction, and create very complex sounds (with effects etc.) for a number of voices at once…in that case, [poly~] would give you the multicore performance boost. But because you’re using a virtual instrument, you don’t need to create the actual sounds in Max, you’re just dealing with the MIDI part.

Jun 20 2012 | 12:12 am

one more thing…
as I play around with it I’m wondering if there is a "softer" way ;-)
I explain…

The above patch whenever receives a new midi message offs the previous one and play the new one.
This is good in order to have note offs, but it can produce some unwanted effect, as follow:

the note let’s say "80" just played with a velocity of "100". And in my melody it was supposed to last let’s say "4000" msecs. If I have a new note is coming in the same place that previous one will be offed (so stopping abruptly) but that off was not necessary, because the incoming note was not a 80, but a 84. So the two of them, in my ideal patch, would live together in harmony, but after "4000" msec 80 would stop. And 84 live its life as it’s supposed to live.

Viewing 6 posts - 1 through 6 (of 6 total)

Forums > MaxMSP